React.js Jobs in San Francisco, CA

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Senior Engineer

Kforce Technology Staffing

•

Remote or Johnston, Rhode Island, USA

Contract

RESPONSIBILITIES: Kforce has a client in need of a Senior Engineer. Key Responsibilities: * Utilize expertise in C# .Net and functional Reactjs to develop and maintain both front-end and back-end components of our applications * The Senior Engineer will create and use REST webservices to ensure seamless communication between the front-end and back-end systems * Leverage Azure technologies to enhance the scalability and performance of our applications * Utilize Docker and Kubernetes for containe
Posted 7 days ago | Updated 1 hour ago

Internship, Site Reliability Engineer, Applications Engineering (Fall 2025)

Tesla Motors

•

Fremont, California, USA

Full-time

Consider before submitting an application: This position is expected to start around September 2025 and continue through the Fall term (approximately December 2025) or into Spring 2026 if available and there is an opportunity to do so. We ask for a minimum of 12 weeks, full-time and on-site, for most internships. Our internship program is for students who are actively enrolled in an academic program. entry level candidates seeking employment after graduation and not returning to school should a
Posted 60+ days ago | Updated 5 hours ago

Sr. Fullstack Software Engineer, Fleetnet

Tesla Motors

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Palo Alto, California, USA

Full-time

Come join a small team of experts building the systems that connect Tesla and our customers to their cars, robotaxis, robots, and energy products. At Tesla, we're at the forefront of connected innovation providing a suite of rich backend services to our growing fleets. The team operates the UI and services behind developer.tesla.com. We own the platform that enables owners to interact with their cars and developers to build device-connected applications. The platform includes Authentication syst
Posted 60+ days ago | Updated 5 hours ago

Dot Net Architect--Part Time

Newt Global

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Remote

Part-time

Key Responsibilities: Architectural Leadership Design and implement scalable, secure, and maintainable software architectures using .NET technologies (ASP.NET Core, .NET Framework). Define and enforce best practices, coding standards, and development processes to ensure high-quality deliverables. Provide end-to-end technical leadership on architecture, design, and implementation of full-stack solutions. Full-Stack Development Lead the development of backend services and APIs using C#, ASP.NET
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Posted 7 days ago | Updated 5 days ago

Sr. Software Engineer, Front End

Rivian

•

Palo Alto, California, USA

Full-time

About Rivian Rivian is on a mission to keep the world adventurous forever. This goes for the emissions-free Electric Adventure Vehicles we build, and the curious, courageous souls we seek to attract. As a company, we constantly challenge what's possible, never simply accepting what has always been done. We reframe old problems, seek new solutions and operate comfortably in areas that are unknown. Our backgrounds are diverse, but our team shares a love of the outdoors and a desire to protect it
Posted 50 days ago | Updated 5 hours ago

Software Engineer, Database as a Service, Infrastructure

Tesla Motors

•

Fremont, California, USA

Full-time

This Software Engineering team is responsible for developing components that streamline the deployment, management, and scaling of diverse database clusters, messaging, and storage systems, as a service. By automating operational workflows and providing standardized interfaces, the team ensures reliability, efficiency, and ease of use for the operations team. We build modular, extensible components providing standardized workflows for performing actions across multiple systems and API targets, s
Posted 4 days ago | Updated 5 hours ago

Full Stack Java Developer

Raas Infotek LLC

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Remote or Houston, Texas, USA

Contract

Full Stack Java Developer (React & AWS) Senior (12+ Years Experience) Contract: W2 Only Job Description: We are seeking a highly experienced Full Stack Java Developer with deep expertise in React, AWS, and modern microservices architecture. This is a senior technical role demanding a proven track record of 12+ years in enterprise software development, including designing and building scalable, secure full-stack applications on AWS. You will lead the design, development, and optimization of compl
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Posted 7 days ago

Ruby on Rails Architect

Ohm Systems, Inc

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Remote

Contract

ROR Architect:- As a hands-on architect, primary responsibilities center around design and development of web based, real-time and batch applicationsCollaborate with members of the design team both technical as well as business owners to identify requirements and design new products or extensions to existing products.Produce application prototypes with sufficient detail to allow others in the development team to complete the development work.Provide technical oversight to the development process
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Posted 39 days ago | Updated 29 days ago

Ruby on Rails Architect - Remote

Mudrasys

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Remote

Contract, Third Party

Position: Ruby on Rails Architect Location: Remote Duration: 6-12months Job Description: Key Responsibilities: Develop and maintain robust, scalable, and secure applications using Ruby on Rails for backend and React for frontend.Design and implement RESTful APIs and integrate third-party services.Optimize application performance and troubleshoot/debug production issues.Collaborate with product managers, designers, and other developers to enhance user experience.Follow best practices in CI/CD, te
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Posted 57 days ago | Updated 22 days ago

Telecom System Integration Developer

Cyber Sphere LLC

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Remote

Third Party, Contract

Telecom System Integration Developer Remote Long Term Contract Note - It s not a specific project Per se. It s a hodgepodge of custom integration request from the various lines of business within the Org. Someone with Developer skills set with experience doing contact center or unified communication integrations. Telephony, Cisco, etc More Developer than Telephony Key Responsibilities: Design, develop, test, and debug robust applications and system components aligned with business and technical
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Posted 8 days ago | Updated 1 hour ago

Software Developer IV

Voyatek

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Remote

Full-time

Outcomes. Delivered. Voyatek delivers outcome-driven technology solutions to public sector agencies and higher education institutions nationwide. For example, our technology: Facilitates access to nutritious food for children of mothers participating in the WIC programSupports first responders in reducing opioid overdoses within their communitiesEmpowers colleges and universities to identify and thwart financial aid fraudEquips teachers with valuable insights to identify students requiring addit
Posted 29 days ago | Updated 13 days ago

Sr. Software Engineer

Visa Inc.

•

Foster City, California, USA

Full-time

Company Description Visa is a world leader in payments and technology, with over 259 billion payments transactions flowing safely between consumers, merchants, financial institutions, and government entities in more than 200 countries and territories each year. Our mission is to connect the world through the most innovative, convenient, reliable, and secure payments network, enabling individuals, businesses, and economies to thrive while driven by a common purpose - to uplift everyone, everywhe
Posted 32 days ago | Updated 5 hours ago

Fullstack Software Engineer II, Data Applications, Triage & Simulation (Autonomy)

Rivian

•

Palo Alto, California, USA

Full-time

About Rivian Rivian is on a mission to keep the world adventurous forever. This goes for the emissions-free Electric Adventure Vehicles we build, and the curious, courageous souls we seek to attract. As a company, we constantly challenge what's possible, never simply accepting what has always been done. We reframe old problems, seek new solutions and operate comfortably in areas that are unknown. Our backgrounds are diverse, but our team shares a love of the outdoors and a desire to protect it
Posted 33 days ago | Updated 5 hours ago

Software Dev Engineer III

Kforce Technology Staffing

•

Remote or Seattle, Washington, USA

Contract

RESPONSIBILITIES: Kforce has an enterprise client that is seeking a Software Dev Engineer in Seattle, WA. Summary: We are looking for a Software Development Engineer to work as part of a two-engineer team to deliver a project that enables an engineering driven process to be self-service for internal users that allows for improved GTM usage of an external facing product. Duties: * Deliver work that employees at Twitch will use and impacts creators on the platform * Partner with an existing eng
Posted 7 days ago | Updated 1 hour ago

Java Developer / Java Architect / Java Front-End Developer

PlumGravity

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Remote or Illinois City, Illinois, USA

Contract

Job Title: Java Developer / Java Architect / Java Front-End DeveloperLocation: Multiple Locations (Hybrid/Onsite based on client requirement)Employment Type: Full-Time (W2 and 1099 Only, no C2C) Job Summary:We are looking for skilled and passionate Java Developers, Java Architects, and Java Front-End Developers to join our growing team. Ideal candidates will have strong expertise in building scalable applications, hands-on coding, and modern front-end frameworks. Key Responsibilities: Design, de
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Posted 1 day ago

Manager, Software Engineering Management - Fullstack

ServiceNow, Inc.

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Remote or Santa Clara, California, USA

Full-time

Company Description It all started in sunny San Diego, California in 2004 when a visionary engineer, Fred Luddy, saw the potential to transform how we work. Fast forward to today - ServiceNow stands as a global market leader, bringing innovative AI-enhanced technology to over 8,100 customers, including 85% of the Fortune 500 . Our intelligent cloud-based platform seamlessly connects people, systems, and processes to empower organizations to find smarter, faster, and better ways to work. But thi
Posted 4 days ago | Updated 5 hours ago

Principal Engineer, User Safety

Roblox

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San Mateo, California, USA

Full-time

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences- all created by our global community of developers and creators. At Roblox, we're building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device.We're on a mission to connect a billion people with op
Posted 60+ days ago | Updated 5 hours ago

Software Engineer

SGS Consulting

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Remote or Lexington, Massachusetts, USA

Contract

Note: Interim clearance is sucient to start on this positionThis position can be fully remote with a few trips per year to Lexington; person must be willing to do that infrequent travel to Client Location. Hours can be a little exible but preference for someone to be working EST hours/or close to.Interview process will likely be one round of interviews Description: Full lifecycle application development. Designing, coding and debugging applications in various software languages. Software analys
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Posted 60+ days ago | Updated 26 days ago

Senior/Lead Full Stack Developer

iSpace, Inc

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Remote

Contract

JOB DETAILS: Title: Senior/Lead Full Stack Developer with AI Location: Remote Work (PST work hours - Team is based out in Los Angeles, CA) Type: 12 24 plus months contract (long term - extendable) Job Description: Seeking a Lead Full Stack Developer that can develop large scale enterprise applications using React.js for front-end, Node.js for API s & MySQL for backend. Along with Kubernetes experience, and experience working with offshore development team. Experience with designing and implemen
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Posted 60+ days ago | Updated 13 hours ago

Full Stack Developer - Backend / API Development

Zachary Piper Solutions, LLC

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Remote

Full-time

Piper Companies is looking for a Full Stack Developer - Backend / API Development to join a strategic global organization a fully remote role working EST / CST hours. The ideal Full Stack Developer - Backend / API Development will design and build scalable backend services while contributing to frontend development efforts. Responsibilities for Full Stack Developer - Backend / API Development: Build and maintain robust, scalable RESTful APIs using Python to power core platform features Collab
Posted 27 days ago | Updated 22 days ago